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From "Aaron T. Myers (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-3571) Allow EditLogFileInputStream to read from a remote URL
Date Thu, 28 Jun 2012 21:31:44 GMT

    [ https://issues.apache.org/jira/browse/HDFS-3571?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13403489#comment-13403489
] 

Aaron T. Myers commented on HDFS-3571:
--------------------------------------

Patch largely looks good to me. One little comment:

# {{"Image transfer servlet at " + url + " failed with status code"}} - The thing at the other
end of the URLLog isn't _necessarily_ an image transfer servlet, right? Might just want to
say "server", as you do later in the method if you don't get a content length header.

+1 once this is addressed.
                
> Allow EditLogFileInputStream to read from a remote URL
> ------------------------------------------------------
>
>                 Key: HDFS-3571
>                 URL: https://issues.apache.org/jira/browse/HDFS-3571
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: ha, name-node
>    Affects Versions: 3.0.0
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>         Attachments: hdfs-3571.txt
>
>
> In order to start up from remote edits storage (like the JournalNodes of HDFS-3077),
the NN needs to be able to load edits from a URL, instead of just local disk. This JIRA extends
EditLogFileInputStream to be able to use a URL reference in addition to the current File reference.

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